Document Type : Original Article
Authors
1 Department of Paper Science and Engineering, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
2 Department of Biosystems Engineering, Shahrekord University, Shahrekord, Iran
3 Department of Cellulose Industries Engineering, Karaj Branch, Islamic Azad University, Karaj, Iran
Abstract
Pyrolysis is a promising process for converting lignocellulosic materials to high-value-added products (bio-oil, biochar, and syngas). This study aimed to produce and characterize bio-oil obtained from pine cones via pyrolysis using a fixed bed reactor system (FBRS). This study investigated the effect of temperature (500, 600, and 850 °C) on the pyrolysis product yield. The findings showed that with increasing the temperature, the bio-oil and gas yield increase, and the bio-char decreases. The highest calorific value of bio-oil (23.74 MJ/kg) and bio-char (32.89 MJ/kg) was obtained at 600 and 850 °C, respectively. The optimal pyrolysis temperature is 850 °C, which maximizes syngas production at 45.5%, making it the most favorable condition for syngas-focused applications. At this temperature, the yields of bio-oil and biochar are 36.2% and 18.3%, respectively. The qualitative analysis conducted through gas chromatography-mass spectrometry (GC/MS) revealed that the bio-oil produced from the pyrolysis of pine cones is a complex mixture of various organic compounds, including but not limited to aldehydes, alcohols, organic acids, furans, phenolic compounds, and several aromatic substances. The presence of these bioactive compounds underscores the potential utility of this bio-oil as a viable biofuel, offering promising opportunities for renewable energy solutions and reduced dependence on fossil fuels
Highlights
Research Highlights:
- Optimization of pine cone pyrolysis was achieved through temperature control.
- The effects of 500°C, 600°C, and 850 °C on product yields and properties were evaluated.
- Syngas yield peaked at 45.5% at 850 °C, demonstrating high energy potential.
- Biochar characterization revealed increased fixed carbon and calorific value at higher temperatures.
- This study highlights the sustainability of utilizing pine cones for bioenergy production.
Keywords
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